Home / 405,097.20-607,589.64-138,853.44

Finding the Fourth Proportional to 405,097.20, 607,589.64 and 138,853.44

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Solution

The fourth proportional to 405,097.20, 607,589.64 and 138,853.44 is: 208,260.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,097.20 : 607,589.64 = 138,853.44 : x
  2. Step 2: Convert to fraction form
    405,097.20/607,589.64 = 138,853.44/x
  3. Step 3: Cross multiply
    405,097.20x = 607,589.64 × 138,853.44
  4. Step 4: Simplify right side
    405,097.20x = 84,365,911,622.36
  5. Step 5: Solve for x
    x = 84,365,911,622.36/405,097.20
  6. Step 6: Final answer
    x = 208,260.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.